Selective oil-break switch.



F. 'I. COPE.

SELECTIVE OIL BREAK SWITCH.

APPLICATION FiLED MAY 3, 1915- Pun-11ml M111. (3, M17.

2 SHEETS SHEET 7.

Elmo e 1'1 '01 un knew I 2 1 1111 60 06 l 6 Ho t/14 u F. T. COPE.

SELECTIVE OIL BREAK SWITCH APPLICATION FILED MAY 13. 19 15.

1 7 2 1 .8 7 O 5 9 Patented. Mam 13, 191? 2 semis-SHEET 2,

"UNITED STATES PATENT ()FFTCE.

EZ'ANK 'l". GQPIE, 421 ALLTANCE, OHIO, A$S1GNOR TO THE ELECTRIC FURNACE COMPANY,

' 8E ALLI..NCE, QHIO, A COB10RATION OF OHIO.

Epeoification of Letters Patent,

Patented M21136, 1917.

' 'Appiication filed May 13, 1.915. Serial No. 27,793.

actor referred to m instantaneously broken ion oithe switch, thus rcimam the iossibilitv of ostwecn the brush and the to provide a switch ti renewable arcing tips which contact the brush and leave the contact plates 61 the brush, thus receivi any arc in i may be caused by the 25 ope 'ation of the s: itch, preventing any undue upon the contact brush.

)l ith these objects in view the invention s in the r construction and ar- 7 nent of par 5, hereinafter described, illusti vcad in tho accompanying drawings, and. particularly pointed out in tho appendl claims, it being undsrstood that various ngos in the form, propo tions, size and in 101' details of construct i may be made in'the scope of the appended claims, nout departing from the spirit or sacrificing any of the advantages of the invention,

the drawings: igure 1 is a diagrammatic view showing my improved selective oil break switch applied to a transformeiz ig. is a top plan view of aportion of lilii: Switch, of which the of n'iv invention is to provide corresponding parts ihroughout all the figures of the drawings.

Referring more especially to the construction illustratrd in the accompanying; drawingi's, the numeral 1 indicates the primar} winding and tho numeral 1 tho secondary winding of a transforincr, tho numcrals 2- and 4- indicating the wircs loading from the transibrnicr. Tho numerals 5 and (i indicate the wires loading from the source ofcurrcnt to the transformer. Tho wire 5 bring connected at T to our cxircinity of the prinuiry winding, the wirc (3 being connected to a stud 8 which is connected with the contact bar 9 by means of a strip 107 A scrics of spaced contact plates 11 are located in alinemcnt parallel to the contact bar 9, ouch of said contact plates being provided with a stud ll which is connected by a wire 12 with the primary winding: of the transformer.

An elongated tank 13 is provided, said tank being preferably lined with suitable insulating matcrihl 1! and with a cover 15 of suitable insulating" material. said cover being provided with a centrally located, longitudinal slot 16 which is preferably provided with the angular guide rails 17. The tank 13 should be kept full of oil as shown in Figs. 41 and 5.

A suitable web 18 is provided upon the top of the tank at each end thereof, said webs being connected to the tank in any suitable and wellknownmanner as by the screw threaded books 19 which pass through suitable aperturcs in the angle irons 20 connected to the sides of the tank, said hooks being provided with wing nuts 21. A rod 22 is carried between the webs 18 being located through suitable apertures therein and held against movement by set screws or the like 23. The operating handle "2% is proforably provided with tho bifurcated arms 25 which are pivotally and slidably mounted upon the rod 22 and. the operating lever 26 is pivotally and slidably mounted upon the rod 212 intermediate the bifurcated arms of the bifurcated handle.

A catch 27 provided with a beveled end 28 is slidably mounted within the transverse walls 29 andBO of the operating handle,-a

hand grip lever 31 which is pivoted at 32 upon the operating handle being pivotally connected at 33 tothe opposite extremity of llll latoli/ Tho latcl 2? is provided with a lttllltftll, portion llll llii'll'ltl arm 3 of the locking pawl 36 is pivoted at ill to tho operating shouldor 3'.) is formed upon the and a coil spring ll) located outta I'QdHCQd wtrei'nity A l of "uh said ;-1 iin lining lI'lllQl'DO-KLl hoho shouidor ii and tho wall 30. A .10 is; aliiiahly mounted upon the latch x adapted to contact with the rear taro t .1 looking; pawl 36, a spring l3 be ing; alir -osnd. liola'oon said sliding collar l wall 0.

opi'erifing lCl'M' 26 is providtd with a tail having. a lie'ivlod 0nd l5. A flat fare iF-l providui'l at tho inner oXlrvniit v of tho latrh 1 upon the unilnr aide thereof, said tam (Engaging tin uppvr ((lljt: ll of the tail fill ol tho oparatin ii'll whon tho parts are in hi (lllfiill position as; shown in Fig. 'l. l ii'- l oounvvtod at ill to thurxtrmnity o'l' lover .26 is a p ol' upwardl disposed to the uppo oxtremilios oil? \"\'l1l('l1 ally ('OTHM l llt'llllS 30 each of said hoads carrying a downwardly disposnd rod 51. flhi) rials 5S1 pass through the in ling); l lovlc 5:5 and are provided with ihhnuts; 53. uvadless holt is conl i'ated through tho lll)(l-f 5:3 and puma-:4 through tho saddle til-l spring nuanhur fill which rarrils tho renewable arc inn; tips 51' at its: vtilroniitivs. and through tho laminated (:onlartln'us-zh 55 and the vou- YOK lilovk 5!), nuts till being provided at tho uppnr a nd lowor oxtroniitios of said bolt. l L (-onliaot strip (ll is lovatvd along tho ou'ter ed zo of the vontart strip 9 nd i m axlaptral to he ongl'agfs'd l y the adjar'ont aroingg' tip 57 when tho parts are in tho closed position as shown in Fig. 4-. Each of the .(Olll'tll'll plates 'll is providod along its outer i with :1 contart strip 2 adapted to ho 4; strip ('9) is; ttll'i'lttl hvtwevn the webs l8 and looattd pa rallul to the rod 22. Said strip lining 'irovidod opposite (:u'h ot the (ontai't- 14min ll with a notvli t l adapted to he oningr pawl 56.

Whon the parts: are in the position shown in Fig. l the circuit through the trimslori'nm is; closed hy moans ot tho laininati-al brush m oonnovtii'isz thev oontavt strip 9 with one of I tho con i pla'lm ll. llhvn it is dwirvd to raise, or lower tho voltage the hand grip l e'cvr Ill upon the operating handle is; ml, drawing: tho vxtrmnity ol tho latch 7 out oli conlavt with tho tail ot' tho op0ratinn lover. Till} laminated hrush 5R oving Fol-mod ol spring:- material will inolanlanoously spring away from tho ontai't strip and plato roduoin; the possihilitv o't musing an arc liotwoi-in saaul hru hand tho oontai l strip and plate. ..ll 0 rirnvwal lc artang upg which recoirml by the,

' i-lra\\'ings4 'lhn operating handle may tv 1 tho brush is; hrongght oppoaito tho wi .vontat plate ll. 'lho oporatrn dlo "ll tho shouldoi no upon the lztch will engage the loi'lung pawl N3 moving: sail l pawl out of engagenwnt with llunolrh ill. The oaa'alin t handle may then he moved 1 1 I 7 into a 'iosition l rn=':1u:: tho iooluna' pawl (tl -ar ot the Stl'll) oil, lne' parts will 'iln n ho in tho position ahowo in 5 of tho a0 he moved lati raliy upon tho rod 215 i i thvn moved down into the pm in Fig. it winning; the hrush into vontait with tho strip l? and lho dos-mod pla lily tho.vonslriuttion ol tin; ()Pti die and lover heroin (llr? that it is llHPUNSllllO a between the brush and the mama-l. strip r Plll'tt-ti slowly. l urthor tho brush must iuivossarit ('()lll'.t1('u with tho rontavt strip and plate, hot'oro it can he inowil into position lo register with any of tho other irontart plates.

Although Fig. l show. the voutavt plalos 'll oo 'incvti rl with tlw primary winding of tho transformer it will of vourao he uudvrst od that this is merely an illustration of ono of the many forms in. whivh the present in \vopiou may he used. The FIMUQ results may he ohlained hy t'onnot'tina' the i-ontaot plates with the secondary winding of the transformer and in fact the device disclosed herein may he used in any inatanco when it is dvairahlo to make selertive (-ontavt between any pair of a plurality of terminals.

lly providing the strip 63 with nolches B l opposite to the contact plates 11 and by (onstructing the locking pawl 36 with the (lOTlgratvd lowoi' portion honeath the notch 65 thorvin itwill lo? Sttl) that it will he iinpoa sihlo to bring th s op-nrating; handlo into tho position shown in l ia. l thus forming: a it contact oxcapt when tho operating hanrlo niowd in such position that the pawl Bit will. register with one of tho notches til. 'lhus it will he iiupossihlo lo lning' the lirush into COlltiHft with tho strip 1) at a point intermediate two ot the platos '11. are routing a possible short vim-nit hotwovn two oi the (-ontarts ll.

Although the drawings and alio't'o specif i-ation dis'rloau the hot mode in whivh l haw ('ontmimlatod mnhodying my invention l :lvsirv to he not limitml liothe details of suvh tllSPlUSlllt. for, in thoi'wnlher practiral application of my invention in'aiiy rhanges in torn; and construction may-be appended claims.

I claim:

1. in a switch of the character described, a contact strip, a plurality of contact plates located in alinement parallel with said coir tact strip, a movable bridge member arranged for selectively making contact between each pair of said contacts, means for automatically releasing said bridge member from contact before shifting said bridge member into the position to makecontact with, a different pair of contacts and means for preventing said bridge member from being moved until said contact is broken.

2. In a. switch of the character described,

an oil containing tank, a contact strip lo- "ated in said tank, a plurality of contact plates located in alinementparallel. to said strip. a rod mounted upon said tank, an opcrating handle slidably mounted upon said rod, an operating lever slidaiiny mounted upon said rod, means for connecting said o ierating lever with said l'landle, means for d ngagi g said lever from said handle, and a short circuiting member carried by said lev and arranged to make selective contact with said contact strip and one of said contac plates.

- i. In a oi? he character described, an oil c tank, a contact strip loi, a plurality oi? contact linement parallel to said. i 2. a rod mounted upon said tank. an ophandle provided. with bifurcated arms mid bi'fi'ireated arms slidably mounted upon said rod, an operating lever slidably H'lUHlltQd upbn taid rod between said bifurcate arms, a spring pressed latch slidably mounted 'in said operating handle and arranged. tolengagc one extremity oi said operating lover, a hand grip pivotally mounted upon said hand lever and. connected to said latch, and a short circuiting member carried by said lever and arranged to make selective contact with said. contact strip. and one of said contact plates.

4-. 'itcli of the character described, or rt-iceptacle, contact strip receptacle, plurality of con rod mounted upon said receprating handle provided with iniurc t d anus, said bifurcated arms slidably mu d upon said rod, an operating lever slidably mounted upon said rod between said bifurcated arms, a spring pressed latch slidably mounted in said operating handle and arranged to engage one extremity of said operating k l a shoulder formed upon said lat locking pawl pivotaliy connected-to'said operating handle and adapted to be engaged by said shoulder, a notched strip carried by said receptacle and provided with notches adapted to receive said locking pawl, a loose spring pressed collar slidahly mounted upon said latch and adapted to engage said locking pawl, a hand grip pivotally connected to said hand lever and connected to said latch, and a short circuiting member carried by said lever andarranged to make selective contact with said contact strip and one of said contact plates.

5. In a switch of the character described, a plu 'ality of pairs of contacts, a movable bridge member arranged for selectively making contact between each pair of said contacts and .means for automatically releasing said bridge member from contactbeforeshifting said bridging member into the position to make contact with a different pair of contacts.

G. In a switch of the character described,

a contact strip, a plurality of contact plates located in alineme'nt parallel with said contact strip, a rod located parallel with said contact strip, an operating handle slidably mounted upon said rod, an operating lever pivotally mounted upon said handle, a short circuiting member carried by said lever and arranged to make selective contact withsaid contact strip and any one of said contact plates, means for moving said lever with said handle, means for disengaging said lever to quickly break the contact between said strip and any of said plates and means for preplates, means for moving said lever with said handleand means 'for disengaging said lever to qu ickly break the circuit between said strip and any o'lfsaid plates.

' 8. In a switch of the character described, a tank adapted to contain oil, one or more pair of terminals llocatedin said tank, a rod mounted upon said tank and arranged parallel to said tGlInlillllS, a lever slidably mounted on said rod, links connected to said lever and extending into said tank, and a short circuiting member carried by said links and movable by said lever in a (lira-, tion normal to the plane of the terminals and arranged to make selective contact with aliiwnient parallel with said Contact strip, n rod mounted upon said tank and arranged parallel to said (soiitact strip, a lever slid: ably mounted upon said rod links connec ed to said lever and extending into said tank, a short circuiting member carried by said links aim ari'zinged to make selective Contact with said Contact strip and. any 01 member is in UOntfiCt With said Contact strip ,and any oi: said contact plates.

in tesciinony that I claim the above, have hereunto subscribed my name.

FRANK T. COPE, 

